Yeah, and because the distance is less than a meter and nothing has to move between the 2 devices, a cable makes so much more sense.

I especially loathe wireless keyboards on desks. The thing don't even move. There is no functional reason to be wireless. If you really want a wireless desk for some reason, just drill a hole and pull the usb cable through. It will save you about 200€ and tons of faff keeping the connection working properly when the device eventually runs out of battery.